Eenvoudig login script.. Doch zonder succes! (Opgelost)

<?php

	session_start();
	include 'config.php';
	if(!isset($_SESSION['authenticatie']) !== true){ include ('login.php'); } else {
	mysql_select_db("$db");
    @mysql_query("SET CHARACTER SET `utf8`");
    @mysql_query("SET NAMES `utf8`");
	
?>

Hier komt de inhoud van mijn pagina (onzichtbaar tot na inloggen)

<?php } ?>

<?php
 
	session_start();
	include 'config.php';
	if(!isset($_SESSION['authenticatie']) !== true){ include ('login.php'); } else {
	mysql_select_db("$db");
    @mysql_query("SET CHARACTER SET `utf8`");
    @mysql_query("SET NAMES `utf8`");
 
?>
 
Hier komt de inhoud van mijn pagina (onzichtbaar tot na inloggen)
 
<?php } ?>

<?php

	session_start();
	
	if(isset($_POST['verzenden'])){
	if(($_POST['user'] == "Administrator" and $_POST["pass"] == "Test")){
		
			$_SESSION['authenticatie'] = true;
			header('Location: index.php');
				
		}
		
	}

?>

<?php
 
	session_start();
 
	if(isset($_POST['verzenden'])){
	if(($_POST['user'] == "Administrator" and $_POST["pass"] == "Test")){
 
			$_SESSION['authenticatie'] = true;
			header('Location: index.php');
 
		}
 
	}
 
?>